At first, I thought maybe I missed a step or made some mistake setting up the NG connection. I remembered seeing someone post about a similar issue online a while back, but of course, when I needed it, I couldn’t find that post anymore. So, I dug in, did some troubleshooting, and here’s what I found — hopefully it helps you if you're facing the same headache.

 

What Was Happening?

Turns out, I wasn’t the only one. A few other folks had shared similar experiences, and their insights were super helpful.

Choke Issue:

One guy mentioned that on NG, the choke was actually closing when it was trying to start. He manually held the choke open while starting the generator, and after it kicked on, the choke stayed open and it ran perfectly.
I tried the same thing — held the choke open while hitting the start — and bam, the generator fired up on NG. It seems like the auto-choke might not behave perfectly when running on natural gas.

Gas Pressure Problem:

Another thing that came up: gas pressure.
Natural gas systems usually run at different pressures. Some setups provide 2 psi service, but many generators need something around 7 inches of water column (WC). That’s a much lower pressure! If your service is 2 psi, you’ll likely need a regulator to drop it down properly for the generator.
I hadn't even thought about that at first, but it makes a big difference.

Hose Size Matters:

Digging deeper, someone else shared that using the hose that came with the generator wasn’t enough for them.
With the standard hose, their 2 psi regulator had to work overtime to maintain around 6" WC under a heavy 6000-watt load. Once they unloaded the unit, the pressure jumped up to 8" WC — and that made starting on NG really difficult.
They ordered a larger supply hose to help reduce the pressure drop, and that helped stabilize things.
Moral of the story: if your gas pressure is fluctuating or you’re dealing with heavy loads, upgrading the hose might be necessary.

Electrical Issues:

Finally, and this one was wild — someone found that their starter wires were burnt off behind the pull-string cover!
Their generator wouldn't start on NG or gasoline, but propane would still light it up. It took them a while to diagnose because the damage was hidden. So, if you’ve checked fuel, choke, and pressure and it still won’t start, it might be worth inspecting the wiring.

What Worked for Me

In my case, manually holding the choke open during start-up was the simple fix I needed.
But after reading more, I realized I also needed to check my gas pressure to make sure everything was dialed in for the long term.
I ended up adding a regulator to bring the pressure down to the right level for NG operation and upgraded my hose just to be safe. Now, my WGen14500TFC runs like a champ on natural gas, propane, and gasoline — exactly how it’s supposed to.

Final Thoughts

If you're struggling to get your generator running on NG, don’t panic!
Start simple — check the choke, verify your gas pressure, inspect your hoses, and if needed, take a look at the wiring.
These tri-fuel machines are amazing once they’re set up correctly, but it can take a little bit of trial and error to get them running smoothly on natural gas.

Hope my experience saves you some time and frustration!